Depth gauge



June 2, 1925.

G. C. PEARSON DEPTH GAUGE Filed Aug'. 29. 1921 ted June 2, 1925.v

i ITEED en'srrav ornata-son, or DENVER; corqonanofnssrenon 'r'of'rirnnnnvnnnoextnmm MANUFACTURING COMPANY, or DENVER, enterrer-e, n oonlronfrron?OFIDEIJA- WARE.

@anni eenen.

"fault inkom it maryconnerfn."

Be it known that L'GUsfrAv C. -Pnnnsom a eitiz-en ofi-theUnited VSta-tes,residing at lenver, in the county of Benverand State of Golorad'ofhaveinvented eertainnevv'and useful' improvements in I'Depth Gauges, of which the lo'lloivinguisia specification.'

"lhepresent invention `relates to depth gauges; the obyeet being: to provideJ a simple Iand Leii'ective structureV that is 'aoc urlato; infits operation,` and is provided with means whereby the parts can beV adjusted to `take up 'Wear'.

` The preferredembodiment ofthe inven- 4tion `is 'illustrated 1n 'f theV accompanying drawings,"wherein Figure l1"i.s^a'side elevation ofthe same,

`F1gurej2is anendelevation,` i i `Figure 3 is asectional fvieW taken von the `line 3-8 oFig-ure 2, v

Figure 4 isa cross sectional view on "the lined-4 of'Figure 1, y Figure is a detail fseetionali' view `o1 the fulcru'm' member, y K 4 i Figure 6 is a`4`- sectional view? `through the yoke "otV the operating! devies."

'In -thejenibodiment disclosed; ai body `eas` ing 6" is employed; preferably formed of 'one piece of metal, and yhavingfa redueed ex tension 7 at' one end Thes bo'dyf 6 "is "provided with afbore' 8,1openi`nglthrougli one end and ttermii'iating 'shortof the other end, said bore forming a chamber fora-swinging indicator in the fornnf'of'al rod1 `9; 'The free end of this rod Whi'clris "iirftheu'form of a` pointer is visible through a side opening 10 preferably covered by a sheet 11 of transparent material, and said end operates in a bushing 12 provided With indicating marks 13a, with Whieh the pointer 9 cooperates.

' This bushing terminates at its outer end in and has a knife edge 18 engaged in a notch 19 formed in one side of saidmindicator and constituting a bearing on Which the indicator swings i The stem'-16isprovided Aatits outerf -endywith' a lbearing head`2`0that engages the inner, end Otan abutmentscrew 21A adjustablythreaded inifthe outer endof vthe bore.f` A leaf .spring22,ff1tted'in the bushing'1125 has a ibearing against the indicator 9 on` the opposite side to the bearing '18e-19 and-thus normally acts to swing the pointer to the left.

Another-transverse bore..22a` 'opening into f the 'inner end ot the bore 8,? contains a1'sli`olably operating 'plunger`23'that carries at its'inner end-aiyoke 211. y This yoke surrounds the inner' endf ofthe indicator i 9" at one side'of the yoke 17, V`andiis fprovidect provided at `its inner/end withai recess 2T (see Figure 6) inl which is1 engaged a 'slidingplunger 28 locatedfin lthe 7bore .of `the tubular fulcru'm memberi stem i 16,v and this i plunger isY borne againstthe Vmember: 24:1` by a spring 29 "also located" in said bore and' abutting-against@ stop screw-30. vwThe spring-29 isthusvaetingHinopposition to the 'springY 22-Yand` vis of suieient rstrength lto overcome or balance said spring`2'2. AAnothercoiled spring-` 31, surrounding the stem V16,` :operates against the outer .ends-of theY same yto hold the` head V2'0" against fthe abutment-screw 21. i

. lvheoperation ofthe device is as ffollofw's: j

VVhen the extension 7i-of` the `gauge is introduced into an opening, if the bottom of such opening is engaged by the projecting end of the plunger 23, saidy plunger Will be moved inwardly into the body and the yoke- 24 thus pressed back against by the action of the spring 29. This permits the spring 22 to operate and swing the pointer to the lett. then the pressure on the plunger 23 is relieved the spring 29 will react and return the pointer to its originaly position. Should Wear take place or adjustment for any other reason be desired, it is only necessary to move the abutment serew21, Whereupon the stein 16 and yoke 18 willbe moved i'nuf'ardly by said screw or outwardly by the spring 31. y

F rom the foregoing', it is thought that the construction operation, and many advantages ofthe herein described invention Will oppose the action ot the indicator' operating' the combination with a body, of an indicaltor therein comprising a rod, one end of which is a pointer, a fulcruin member, and an operating device mounted on the body on opposite sides of the other end of the rod,

:said iulcruin member and operating device having yokes extending around the indicator rod and respectively bearing trans- 'versely thereagainst on' the sides opposite their inountings and being out of line with each other. Y

2. In a gauge ot the character set forth, the combination With a body casing, of an indicator therein, a fulcruni member mountedin the body on oneside of the indicator and including a yoke that embraces the indicator and has a bearing against the opposite side of Vthe same, a 'spring operating' yagainst the indicator to move it in one direction, an operating plunger slidably mount' ed in said opposite side of the body andV having a yoke that embraces the indicator and has a bearing thereagainst on the oppo# site side to the fulcrum member and at one side of the plane of the axis thereof, and

a second spring actingron the plunger to s prin g.

In a gauge oiithecharacter set forth,

` the combination with a body casing, oit' an L vice also engaged with the indicator, and a y indicator therein, a vfulcruin member 'engaged with the indicator', an operating despiing device forming the indicator and operatiiig device, said spring device being carA riedV by the fulcruni member and bearing against the operating device.

t. In a gauge ofA the character set forth, the combination With a body casing, of an indicator therein, a ulcrum member coinprising aftubular stem and a yoke, said yoke being `engaged With the indicator, an operating device also engaged with the indicator, and a spring pressed plunger in the stein of the fulcrummember bearing against theoperatingdevice.v

.5. In a gauge of the character described, the combination with a body casing, of an indicator therein, Va ulcrum member en# `gaged With the indicator, an abutment for the fulcrum inember,a spring engaging lthe ulcruin member to hold it against the abutment, said fulcruni member bearing against the indicator, and an operating `device projecting from the casing and bearing against the indicator.

G. In a gauge of the character rset forth. the combination with a body having a bore forming an indicator chamber, 1an indicator in said chamber, Vsaid .bodyAv having other -bores transverse to and` intersecting, the indicator chamber, a tubular fulcrumfstem in oneot the transverse bores having a yoke that surrounds and bears against one side of the indicator, an adjustable abutment in tlie outer end of said transverse bore, a

'spring bearing against the stem and holding it against the abutment,.a plunger rod slidablymounted inthe other transverse bore and having a, yoke that surrounds and bears against the indicator, and a spring pressed plunger in the fulcruin stem bearing against the plunger rod yoke.

'In testimony whereof I aflix my signature in the presenceoittwo witnesses.

j GUSTAV C. PEARSON.

lVitnesses SIDNEY rJOHNSON, FniiNoH SAMrsoN. 

